Retinoscope.



. UNITED sTATEs PATnNT oFFroE.

Specification of Letters Patent.

Patented March 20, 1906.

Application filed November 18,1905. Serial No. 288,021.

To all whom it may concern,.- Be it known 'thatL AUGUST L. PALIs, ya citizen of the United States, residing at Upland, in the county of San Bernardino n and State of California, have invented new and useful Improvements in Retinoscopes, of which the following is a specification. I

This invention relates to instruments of the type known as retinoscopes7 and as for lIo its objects to produce a comparatively simconstruction and combination of parts more zo fully hereinafter described.

In the accompanying drawings, Fi ure 1 is a rear elevation of an instrument em odying the invention. Fig. 2 is a longitudinal secron centrally therethrough on the line 2 2 of ig. l.

' Referring to the drawings, 1 designates the body or head of the instrument, comprising a back piece or base 2 and a front piece or reflector 3, secured to vthe base 2 by screws or other fastenin membersfi and forming in conjunction wlth the back piece a chamber 5, there being provided at the center of the front piece or reflector 3 a peep or sight opening 6, disposed in axial alinement With a relatively enlarged objective opening 7, formed centrally in the b'ack piece 2, which latter is of concave or convex form to present an inner concave face 8, while the reiiector 3 is of substantially semispherical form to present a continuously-curved inner reflecting-face.

Attached to the body 1 and communicating with the interior thereof through an opening 9 is a tubular handle 10, having electric conducting-Wires 11 lead therethroughv and connected with a plurality of incandescent lamps 12, attached to the inner face of the base 2 and arranged concentrically around the objective opening 7, it being noted that owing to the lamps being seated upon the l concaved face 8 `they are pitched at a slight inclination relatively and with respect to the axial line of theopenings 6 and 7, whereby the light-rays refracted from the inner curved face of the reflector 3 will be directed in substantially straight lines through the opening 5 5 7 and inhighly-intensified condition.

In practice and in the use of the instrument the eye or other object to be examined is properly positioned over the opening 7, through which an intensified light will be di- 6o rected by the reflector 3 to permit thorough inspection of the object by a person looking through the sight or peep opening 6.

From the foregoing it is apparent that I produce asimple device admirably adaptedY for the attainment of the ends in view, it being understood that in attaining these ends minor changes in the details herein set forth v may be resorted to without departing from the spirit of the invention. 7o

Having thus fully described my invention, what I claim as new is- 1. A device of the class described comprising a curved reflector having a peep-opening,

a back piece secured to the reflector and provided with an objective opening, and a lamp arranged upon the inner face of the back piece for directing light tothe inner curved face of the'reiiector.

2. A device of the class described compris- 8O ing a Ysubstantially semispherical reflector having a peep-opening, a back piece attached to the reflector and serving in conjunctionV therewith to form a chamber, said back piece being provided with an objective opening, and a lamp arranged in the chamber for d1- recting light-rays against the inner face of the reflector.

3. A device of the class described comprising a reflector having an inner continuouslycurved reflecting-face, a back piece secured to the reiiector and serving in conjunction therewith to form a chamber, lsaid reflector being provided with a peep-opening and the back piece having an objective opening, and a lamp arranged in the reflector for directing llight-rays to the curved face of the reflector.

4. A device of the class described comprising a reflector having acontinuously-curved inner reflecting-face, a back piece attached to Too the reflector and serving in conjunction therel In testimony whereof I affix my signature with to form a chamber, said back piece liay- 1n presence of two w1tnesses. lng an inner concaved 'face and an objective opening and the reflector being provided with AUGUSrl L' PALIS 5 a peep-opening, and a plurality of lamps at- Witnesses:

tached to the concaved face of the back piece VERNIE HAYDEN,

around the objective opening R. C. NORTON. 

